package models

import (
	"errors"
	"fmt"
	"reflect"
	"strings"

	"github.com/astaxie/beego/orm"
)

type Personnel struct {
	Id         int    `orm:"column(id);auto"`                 //
	Uname      string `orm:"column(uname);size(255)"`         //姓名
	Wcode      string `orm:"column(wcode);size(120);null"`    //工号
	Sex        string `orm:"column(sex);size(10);null"`       //性别
	Phone      string `orm:"column(phone);size(20);null"`     //联系电话
	Email      string `orm:"column(email);size(255);null"`    //邮箱
	Wqq        string `orm:"column(wqq);size(30);null"`       //qq
	Icodety    string `orm:"column(icodety);size(60);null"`   //证件类型
	Icodenum   string `orm:"column(icodenum);size(120);null"` //证件编号
	Wtype      string `orm:"column(wtype);size(20)"`          //工作性质（兼职，全职）
	Wstatus    string `orm:"column(wstatus);size(20)"`        //状态（试用 正式 离职）
	Extetime   int    `orm:"column(extetime)"`                //试用期限
	Waddress   string `orm:"column(waddress);size(255);null"` //工作地点
	Paddtime   string `orm:"column(paddtime);size(60)"`       //入职时间
	Uid        int    `orm:"column(uid)"`                     //创建人
	Ctime      int    `orm:"column(ctime)"`                   //创建时间
	Pfile      string `orm:"column(pfile);size(255)"`         //附件地址
	Department string `orm:"column(department);size(255)"`    //部门
	Posts      string `orm:"column(posts);size(255)"`         //岗位
}

func (t *Personnel) TableName() string {
	return "my_personnel"
}

func init() {
	orm.RegisterModel(new(Personnel))
}

// AddPersonnel insert a new Personnel into database and returns
// last inserted Id on success.
func AddPersonnel(m *Personnel) (id int64, err error) {
	o := orm.NewOrm()
	id, err = o.Insert(m)
	return
}

// GetPersonnelById retrieves Personnel by Id. Returns error if
// Id doesn't exist
func GetPersonnelById(id int) (v *Personnel, err error) {
	o := orm.NewOrm()
	v = &Personnel{Id: id}
	if err = o.Read(v); err == nil {
		return v, nil
	}
	return nil, err
}

func GetPersonnelCount(query map[string]string) (num int64, err error) {
	o := orm.NewOrm()
	qs := o.QueryTable(new(Personnel))
	// query k=v
	for k, v := range query {
		// rewrite dot-notation to Object__Attribute
		k = strings.Replace(k, ".", "__", -1)
		if strings.Contains(k, "isnull") {
			qs = qs.Filter(k, (v == "true" || v == "1"))
		} else {
			qs = qs.Filter(k, v)
		}
	}
	num, err = qs.Count()
	return
}

// GetAllPersonnel retrieves all Personnel matches certain condition. Returns empty list if
// no records exist
func GetAllPersonnel(query map[string]string, fields []string, sortby []string, order []string,
	offset int64, limit int64) (ml []interface{}, err error) {
	o := orm.NewOrm()
	qs := o.QueryTable(new(Personnel))
	// query k=v
	for k, v := range query {
		// rewrite dot-notation to Object__Attribute
		k = strings.Replace(k, ".", "__", -1)
		if strings.Contains(k, "isnull") {
			qs = qs.Filter(k, (v == "true" || v == "1"))
		} else {
			qs = qs.Filter(k, v)
		}
	}
	// order by:
	var sortFields []string
	if len(sortby) != 0 {
		if len(sortby) == len(order) {
			// 1) for each sort field, there is an associated order
			for i, v := range sortby {
				orderby := ""
				if order[i] == "desc" {
					orderby = "-" + v
				} else if order[i] == "asc" {
					orderby = v
				} else {
					return nil, errors.New("Error: Invalid order. Must be either [asc|desc]")
				}
				sortFields = append(sortFields, orderby)
			}
			qs = qs.OrderBy(sortFields...)
		} else if len(sortby) != len(order) && len(order) == 1 {
			// 2) there is exactly one order, all the sorted fields will be sorted by this order
			for _, v := range sortby {
				orderby := ""
				if order[0] == "desc" {
					orderby = "-" + v
				} else if order[0] == "asc" {
					orderby = v
				} else {
					return nil, errors.New("Error: Invalid order. Must be either [asc|desc]")
				}
				sortFields = append(sortFields, orderby)
			}
		} else if len(sortby) != len(order) && len(order) != 1 {
			return nil, errors.New("Error: 'sortby', 'order' sizes mismatch or 'order' size is not 1")
		}
	} else {
		if len(order) != 0 {
			return nil, errors.New("Error: unused 'order' fields")
		}
	}

	var l []Personnel
	qs = qs.OrderBy(sortFields...)
	if _, err = qs.Limit(limit, offset).All(&l, fields...); err == nil {
		if len(fields) == 0 {
			for _, v := range l {
				ml = append(ml, v)
			}
		} else {
			// trim unused fields
			for _, v := range l {
				m := make(map[string]interface{})
				val := reflect.ValueOf(v)
				for _, fname := range fields {
					m[fname] = val.FieldByName(fname).Interface()
				}
				ml = append(ml, m)
			}
		}
		return ml, nil
	}
	return nil, err
}

// UpdatePersonnel updates Personnel by Id and returns error if
// the record to be updated doesn't exist
func UpdatePersonnelById(m *Personnel) (err error) {
	o := orm.NewOrm()
	v := Personnel{Id: m.Id}
	// ascertain id exists in the database
	if err = o.Read(&v); err == nil {
		var num int64
		if m.Pfile == "" {
			m.Pfile = v.Pfile
		}
		if num, err = o.Update(m, "Uname", "Wcode", "Sex", "Phone", "Email", "Wqq", "Icodety", "Icodenum", "Wtype", "Wstatus", "Extetime", "Waddress", "Paddtime", "Uid", "Pfile", "Department", "Posts"); err == nil {
			fmt.Println("Number of records updated in database:", num)
		}
	}
	return
}

// DeletePersonnel deletes Personnel by Id and returns error if
// the record to be deleted doesn't exist
func DeletePersonnel(id int) (err error) {
	o := orm.NewOrm()
	v := Personnel{Id: id}
	// ascertain id exists in the database
	if err = o.Read(&v); err == nil {
		var num int64
		if num, err = o.Delete(&Personnel{Id: id}); err == nil {
			fmt.Println("Number of records deleted in database:", num)
		}
	}
	return
}
